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Prior research has shown that an individual's hormonal profile can influence the individual's social standing within a group. We introduce a different construct-a collective hormonal profile-which describes a group's hormonal make-up. We test whether a group's collective hormonal profile is related to its performance. Analysis of 370 individuals randomly assigned to work in 74 groups of three to six individuals revealed that group-level concentrations of testosterone and cortisol interact to predict a group's standing across groups. Groups with a collective hormonal profile characterized by high testosterone and low cortisol exhibited the highest performance. These collective hormonal level results remained reliable when controlling for personality traits and group-level variability in hormones. These findings support the hypothesis that groups with a biological propensity toward status pursuit (high testosterone) coupled with reduced stress-axis activity (low cortisol) engage in profit-maximizing decision-making. The current work extends the dual-hormone hypothesis to the collective level and provides a neurobiological perspective on the factors that determine who rises to the top across, not just within, social hierarchies.
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http://dx.doi.org/10.1073/pnas.1603443113 | DOI Listing |
Mol Oncol
September 2025
Radiobiology Unit, Nuclear Medical Applications Institute, Belgian Nuclear Research Centre, SCK CEN, Mol, Belgium.
Breast cancer (BC) diagnostics and prognostics traditionally rely on invasive tissue biopsies, presenting limitations for large-scale screening and continuous patient monitoring. Salivary biomarkers have recently emerged as a compelling noninvasive and accessible alternative, offering significant potential for population-level screening and long-term monitoring of BC. In this study, we conducted a comprehensive salivary transcriptomic profiling of BC patients using high-throughput RNA sequencing.
View Article and Find Full Text PDFPLoS Comput Biol
August 2025
Department of Data Science and Artificial Intelligence, Faculty of Information Technology, Monash University, Clayton, Victoria, Australia.
Age-polyethism-the age-based allocation of tasks in social insect colonies-is a key feature of division of labour. While its hormonal underpinnings have been studied extensively, the behavioural and environmental mechanisms driving age-polyethism remain poorly understood, especially under ecological stress. We present a novel modelling framework that integrates social learning with task-related environmental feedback to explain the emergence and breakdown of age-polyethism.
View Article and Find Full Text PDFSports Med
August 2025
School of Behavioural and Health Sciences, Australian Catholic University, Brisbane, QLD, Australia.
Increased physiological demands in elite women's football coupled with growing demands on and off the field of play have inevitably placed more pressure on players. Recovery therefore plays a critical role in sustaining health and maintaining high performance for training and readiness to compete. Recovery strategies start with the fundamental need for adequate sleep quality and duration, and nutrition.
View Article and Find Full Text PDFRadiat Res
August 2025
SRI Biosciences, SRI International, Menlo Park, California.
In the event of a large-scale radiological emergency, delivering timely medical aid to individuals receiving potentially lethal doses of radiation will result in improved survival and decreased severity of injuries. While it may be possible to reconstruct a dose estimate based on a location during the event and/or early symptoms presenting after the event, limitations with readily available information and inaccuracy of that estimate may not provide enough certainty for successful medical triage. Thus, individual biodosimetry assessments would assist medical professionals in providing prompt care to those who would benefit the most.
View Article and Find Full Text PDFProtein Sci
September 2025
Center for Targeted Therapy Center, Bogazici University, Istanbul, Turkey.
Structures based on x-ray diffraction data collected at 2.3, 2.88, and 2.
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